525420224 has 112 divisors (see below), whose sum is σ = 1328440320. Its totient is φ = 200724480.

The previous prime is 525420197. The next prime is 525420227. The reversal of 525420224 is 422024525.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 525420193 and 525420202.

It is not an unprimeable number, because it can be changed into a prime (525420227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142889 + ... + 146519.

Almost surely, 2^525420224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525420224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664220160).

525420224 is an abundant number, since it is smaller than the sum of its proper divisors (803020096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525420224 is a wasteful number, since it uses less digits than its factorization.

525420224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3676 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 525420224 is about 22922.0466799978. The cubic root of 525420224 is about 806.9295041624.

Adding to 525420224 its reverse (422024525), we get a palindrome (947444749).

The spelling of 525420224 in words is "five hundred twenty-five million, four hundred twenty thousand, two hundred twenty-four".